bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 11, 2024
Summary
The
butterfly-shaped
keel
flowers
are
among
the
most
successful
pollination
syndromes
in
angiosperms.
These
steer
mechanical
interaction
with
bees
and
thus
hypothesized
to
accelerate
pollinator-driven
diversification.
highly
labile
evolution
of
Papilionoideae
(Fabaceae)
provides
a
suitable
system
test
this
hypothesis
but
robust
phylogeny
is
lacking.
Using
1,456
low-copy
nuclear
loci,
we
confidently
resolve
early
divergence
history
Papilionoideae.
Constrained
by
backbone
phylogeny,
generated
time
tree
for
3,326
Fabales
evaluate
tempo
mode
diversification
within
state-dependent
evolutionary
framework.
first
emerged
around
59.0
Ma
Papilionoideae,
predating
earliest
fossil
3–4
million
years.
Miocene
coincided
rapid
flowers.
At
least
seven
independent
origins
twenty-seven
losses
were
identified
Polygalaceae,
Cercidoideae
during
time.
However,
model
was
not
favored.
Lack
radiation
associated
suggests
that
solely
driven
pollinator-mediated
selection,
instead
an
outcome
synergistic
effects
multiple
innovations
including
nitrogen
fixing
chemical
defense
as
well
dispersal
subtropical
temperate
regions.
PhytoKeys,
Год журнала:
2024,
Номер
240, С. 1 - 552
Опубликована: Апрель 3, 2024
Caesalpinioideae
is
the
second
largest
subfamily
of
legumes
(Leguminosae)
with
ca.
4680
species
and
163
genera.
It
an
ecologically
economically
important
group
formed
mostly
woody
perennials
that
range
from
large
canopy
emergent
trees
to
functionally
herbaceous
geoxyles,
lianas
shrubs,
which
has
a
global
distribution,
occurring
on
every
continent
except
Antarctica.
Following
recent
re-circumscription
15
genera
as
presented
in
Advances
Legume
Systematics
14,
Part
1,
using
basis
phylogenomic
analysis
997
nuclear
gene
sequences
for
420
all
but
five
currently
recognised
subfamily,
we
present
new
higher-level
classification
subfamily.
The
comprises
eleven
tribes,
are
either
new,
reinstated
or
re-circumscribed
at
this
rank:
Caesalpinieae
Rchb.
(27
/
223
species),
Campsiandreae
LPWG
(2
5–22),
Cassieae
Bronn
(7
695),
Ceratonieae
(4
6),
Dimorphandreae
Benth.
35),
Erythrophleeae
/13),
Gleditsieae
Nakai
(3
20),
Mimoseae
(100
3510),
Pterogyneae
(1
1),
Schizolobieae
(8
42–43),
Sclerolobieae
&
Hook.
f.
(5
113).
Although
many
these
lineages
have
been
named
past,
tribes
informal
generic
groups,
their
circumscriptions
varied
widely
changed
over
past
decades,
such
described
here
differ
membership
those
previously
recognised.
Importantly,
approximately
3500
100
former
Mimosoideae
now
placed
reinstated,
newly
circumscribed,
tribe
Mimoseae.
Because
size
ecological
importance
tribe,
also
provide
clade-based
system
includes
17
lower-level
clades.
Fourteen
remain
unplaced
clades:
eight
resolved
two
grades
six
phylogenetically
isolated
monogeneric
lineages.
In
addition
classification,
key
genera,
morphological
descriptions
notes
diversity
growth
forms,
foliage,
flowers
fruits
illustrated
each
genus
distribution
map,
based
quality-controlled
herbarium
specimen
localities.
A
glossary
specialised
terms
used
legume
morphology
provided.
This
provides
solid
communication
framework
downstream
analyses
biogeography,
trait
evolution
diversification,
well
taxonomic
revision
still
understudied
American Journal of Botany,
Год журнала:
2024,
Номер
111(3)
Опубликована: Фев. 28, 2024
Abstract
Premise
Astragalus
(Fabaceae),
with
more
than
3000
species,
represents
a
globally
successful
radiation
of
morphologically
highly
similar
species
predominant
across
the
northern
hemisphere.
It
has
attracted
attention
from
systematists
and
biogeographers,
who
have
asked
what
factors
might
be
behind
extraordinary
diversity
this
important
arid‐adapted
clade
sets
it
apart
close
relatives
far
less
richness.
Methods
Here,
for
first
time
using
extensive
phylogenetic
sampling,
we
whether
(1)
is
uniquely
characterized
by
bursts
or
diversification
instead
uniform
no
different
closely
related
taxa.
Then
tested
attributable
specifically
to
its
predilection
(2)
cold
arid
habitats,
(3)
particular
soils,
(4)
chromosome
evolution.
Finally,
(5)
originated
in
central
Asia
as
proposed
(6)
niche
evolutionary
shifts
were
subsequently
associated
colonization
other
continents.
Results
Our
results
point
importance
heterogeneity
,
upshifts
earliest
divergences
but
not
strongly
tied
any
abiotic
factor
biogeographic
regionalization
here.
The
only
potential
correlate
identified
was
number.
Biogeographic
strong
association
environment
highlight
gateway.
Conclusions
investigation
shows
studies
logistically
challenging
“mega‐radiations.”
findings
reject
simple
key
innovation
high
underline
often
nuanced,
multifactorial
processes
leading
species‐rich
clades.
Journal of Integrative Plant Biology,
Год журнала:
2024,
Номер
66(3), С. 546 - 578
Опубликована: Янв. 30, 2024
Angiosperms
(flowering
plants)
are
by
far
the
most
diverse
land
plant
group
with
over
300,000
species.
The
sudden
appearance
of
angiosperms
in
fossil
record
was
referred
to
Darwin
as
"abominable
mystery,"
hence
contributing
heightened
interest
angiosperm
evolution.
display
wide
ranges
morphological,
physiological,
and
ecological
characters,
some
which
have
probably
influenced
their
species
richness.
evolutionary
analyses
these
characteristics
help
address
questions
diversification
require
well
resolved
phylogeny.
Following
great
successes
phylogenetic
using
plastid
sequences,
dozens
thousands
nuclear
genes
from
next-generation
sequencing
been
used
phylogenomic
analyses,
providing
phylogenies
new
insights
into
evolution
angiosperms.
In
this
review
we
focus
on
recent
large
clades,
orders,
families,
subdivisions
families
provide
a
summarized
Nuclear
Phylogenetic
Tree
Angiosperm
Families.
newly
established
relationships
highlighted
compared
previous
results.
sequenced
genomes
Amborella,
Nymphaea,
Chloranthus,
Ceratophyllum,
monocots,
Magnoliids,
basal
eudicots,
facilitated
phylogenomics
among
five
major
clades.
All
but
one
64
orders
were
included
except
placements
several
orders.
Most
robust
highly
supported
placements,
especially
for
within
important
families.
Additionally,
examine
divergence
time
estimation
biogeographic
basis
frameworks
discuss
differences
analyses.
Furthermore,
implications
ancestral
reconstruction
characters
groups,
limitations
current
studies,
taxa
that
future
attention.
Summary
The
butterfly‐shaped
keel
flower
is
a
highly
successful
floral
form
in
angiosperms.
These
flowers
steer
the
mechanical
interaction
with
bees
and
thus
are
hypothesized
to
accelerate
pollinator‐driven
diversification.
exceptionally
labile
evolution
of
Papilionoideae
(Fabaceae)
provides
suitable
system
test
this
hypothesis.
Using
1456
low‐copy
nuclear
loci,
we
confidently
resolve
early
divergence
history
Papilionoideae.
Constrained
by
backbone
phylogeny,
generated
time
tree
for
3326
Fabales
evaluate
tempo
mode
diversification
within
state‐dependent
evolutionary
framework.
first
emerged
c.
59.0
million
years
ago
Papilionoideae,
predating
earliest
fossil
3–4
years.
Miocene
coincided
rapid
flowers.
At
least
six
independent
origins
32
losses
were
identified
Cercidoideae,
Polygalaceae.
However,
model
was
not
favored.
Lack
radiation
associated
suggests
that
solely
driven
pollinator‐mediated
selection,
but
instead
an
outcome
synergistic
effects
multiple
innovations,
including
nitrogen
fixation
chemical
defense,
as
well
dispersal
into
subtropical
temperate
regions.
Botanical Journal of the Linnean Society,
Год журнала:
2023,
Номер
202(4), С. 449 - 475
Опубликована: Янв. 11, 2023
Abstract
The
early-branching
clades
of
Fabaceae
subfamily
Papilionoideae
are
characterized
by
their
remarkable
lability
in
floral
architecture.
In
contrast,
more
derived
papilionoid
lineages
marked
evolutionary
conservatism
towards
strongly
bilateral,
papilionate
flowers.
Here,
we
show
an
unexpected
example
a
unique
architecture
during
the
early
diversification
history
papilionoids.
We
built
most
comprehensively
sampled
molecular
phylogenetic
tree
with
focus
on
early-diverging
Dipterygeae
clade
to
evaluate
winged
and
associated
traits
related
flower
specialization
(e.g.
zygomorphy,
petal
differentiation,
stable
stamen
number
sheath).
comprise
c.
22
species
mostly
giant
trees
from
across
tropical
forests
Central
America
Amazon,
but
they
also
ecologically
dominant
savannas
Brazilian
Plateau.
Phylogenetic
analyses
nuclear
ribosomal
ITS/5.8S
plastid
matK
trnL
intron
sequences
supported
inter-relationships
monophyly
each
genus
(Dipteryx,
Monopteryx,
Pterodon
Taralea).
Bayesian
relaxed-clock
dating
model
ancestral
character
estimation
revealed
30
Myr
all
papilionate-related
comprising
recent
common
ancestor
Dipteryx,
Taralea,
fruit
morphology
entire
clade.
Despite
Monopteryx
remaining
being
florally
discrepant,
collectively
defined
synapomorphy
that
is
among
Fabaceae:
highly
differentiated
calyx,
where
two
upper
lobes
enlarged
wing-like,
whereas
other
three
lower
reduced.
suggest
different
dispersal
strategies
ancient
Dipterygeae,
which
has
maintained
effective
ecological
interactions
specialized
pollinators
ensured
protection
young
buds
developing
fruits,
may
explain
successful
persistence
main
Neotropical
biomes.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 23, 2024
Abstract
Erythrina
is
a
Pantropical
bird-pollinated
genus
of
Fabaceae.
Thus,
its
flowers
are
usually
large,
showy,
red,
or
yellowish,
which
offer
nectar
as
floral
resource.
There
two
main
interaction
systems
with
birds:
in
one,
the
inflorescences
erect,
and
horizontal,
offering
no
landing
platform;
other,
parts
more
exposed.
Despite
their
structural
variation,
little
known
about
how
species
same
diverge
ontogenetically
to
form
functionally
different
flowers.
Therefore,
this
study
aimed
investigate
development
according
pollination
system.
speciosa
pollinated
by
hummingbirds,
E.
poeppigiana
passerines.
Flowers
buds
were
collected
fixed
for
analysis
using
scanning
electron
microscopy
light
microscopy.
Some
characteristics
common
both
species:
formation
pseudoracemose
inflorescence,
unidirectional
emergence
organs,
short
staminal
tube
involving
nine
ten
stamens
(androecium
diadelphous).
Other
characteristics,
notably
those
related
late
stages
development,
gradually
diverged.
Among
them
inflorescence
pattern;
reduced
free
keel
petals
,
while
they
longer
merge;
participation
standard
display.
Such
may
not
be
phylogenetically
reveal
potential
ontogenetic
pathways
functional
convergence
that
have
experienced
throughout
evolution
.
Journal of Systematics and Evolution,
Год журнала:
2024,
Номер
62(6), С. 1103 - 1117
Опубликована: Апрель 24, 2024
Abstract
The
Millettioid/Phaseoloid
(or
the
Millettioid)
clade
is
a
major
lineage
of
subfamily
Papilionoideae
(Fabaceae)
that
poorly
understood
in
terms
its
diversification
and
biogeographic
history.
To
fill
this
gap,
we
generated
time‐calibrated
phylogeny
for
749
species
representing
c
.
80%
genera
using
nrDNA
ITS,
plastid
matK
,
plastome
sequence
(including
38
newly
sequenced
plastomes).
Using
phylogenetic
framework,
explored
clade's
temporal
reconstructed
ancestral
areas
dispersal
events.
Our
analyses
support
monophyly
four
tribal
lineages
(Abreae,
Desmodieae,
Indigofereae,
Psoraleeae),
while
two
sensu
lato
millettioids
phaseoloids
are
polyphyletic.
fossil‐calibrated
dating
analysis
showed
nearly
simultaneous
divergence
between
stem
node
(
62
Ma)
crown
61
Paleocene.
suggested
originated
Africa
dispersed
to
Asia,
Europe,
Australia,
Americas
at
different
periods
Cenozoic.
We
found
evidence
shifts
rates
across
throughout
Cenozoic,
with
rapid
increase
net
since
10
Ma.
Possible
explanations
present‐day
richness
distribution
include
boreotropical
migration,
frequent
intra‐
intercontinental
long‐distance
dispersals
elevated
speciation
following
Mid‐Miocene
Climatic
Optimum.
Together,
these
results
provide
novel
insights
into
patterns
clade,
setting
stage
future
evolutionary
research
on
important
legume
clade.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Июль 4, 2024
The
genus
Euphorbia
(Euphorbiaceae)
has
near-cosmopolitan
distribution
and
serves
as
a
significant
resource
for
both
ornamental
medicinal
purposes.
Despite
its
economic
importance,
Euphorbia's
taxonomy
long
been
challenged
by
the
intricate
nature
of
morphological
traits
exhibiting
high
levels
convergence.
While
molecular
markers
are
essential
phylogenetic
studies,
their
availability
limited.
To
address
this
gap,
we
conducted
comparative
analyses
focusing
on
chloroplast
(CP)
genomes
nine
species,
incorporating
three
newly
sequenced
annotated
accessions.
In
addition,
informativeness
nucleotide
diversity
were
computed
to
identify
candidate
among
closely
related
taxa
in
genus.
Our
investigation
revealed
relatively
conserved
sizes
structures
CP
across
studied
with
notable
interspecific
variations
observed
primarily
non-coding
regions
IR/SC
borders.
By
leveraging
diversity,
identified
rpoB
gene
optimal
species
delimitation
shallow-level
inference
within
Through
comprehensive
analysis
multiple
taxa,
our
study
sheds
light
evolutionary
dynamics
taxonomic
intricacies
Euphorbia,
offering
valuable
insights
into
genome
evolution
taxonomy.
Ecology and Evolution,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 1, 2025
ABSTRACT
Erythrina
variegata
L.
1754,
a
thorny
deciduous
tree
of
Fabaceae,
contains
various
chemical
compounds
such
as
alkaloids,
flavonoids,
and
triterpenoids
exhibits
anti‐depressant,
anti‐inflammatory,
antidiabetic
activities.
However,
genomic
data
E.
are
limited.
In
this
study,
the
complete
chloroplast
genome
was
sequenced
characterized
using
Illumina
sequencing
platform.
The
152,351
bp
in
length
consisted
large
single
copy
(82,907
bp),
small
(26,309
two
inverted
repeat
regions
(16,826
bp).
There
were
79
protein‐coding
genes,
30
transfer
RNA
four
ribosomal
genes.
Comparative
analysis
revealed
high
conservation
genomes
among
species
regarding
size,
structure,
gene
content.
phylogenetic
study
also
indicated
close
relationship
between
variagata
sanwicensis
.
This
provides
initial
plastome
for
further
studies
examining
related
Fabaceae.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
15
Опубликована: Янв. 20, 2025
Background
The
Peucedanum
s.l.
genus,
the
backbone
member
of
subfamily
Apioideae,
includes
many
medically
and
economically
important
plants.
Although
previous
studies
have
proved
that
genus
was
not
a
natural
taxonomic
unit
taxonomists
also
conducted
several
revisions
for
taxa
this
classifications
numerous
still
been
satisfactorily
resolved,
especially
those
endemic
to
China.
Therefore,
we
comprehensive
revision
within
polyphyletic
in
study.
Methods
We
used
two
molecular
datasets
(103
plastomes
43
nrDNA
sequences)
generated
by
genome
skimming
reconstructed
reliable
phylogenetic
framework
with
high
support
resolution.
In
addition,
investigated
divergence
time
core
clade
taxa.
Results
Discussion
Both
analyses
failed
recover
as
monophyletic
group
robustly
supported
P.
morisonii
,
representative
s.s.,
distantly
related
other
members,
which
implied
these
were
“truly
plants”.
Among
plastid-based
phylogenies
recognized
clades,
A
(four
species)
B
(10
taxa).
Meanwhile,
obvious
features
morphology,
plastome,
chromosome
number
each
detected:
dorsally
compressed
glabrous
mericarps
filiform
dorsal
ribs,
winged
lateral
vittae
commissure
furrow,
IRa/LSC
border
falling
into
rpl
23
gene,
an
overall
plastome
size
152,288-154,686
bp,
numbers
2n=20
found
A;
whereas
pubescent
ycf
2
146,718-147,592
2n=22
discovered
B.
established
new
genera
(
Shanopeucedanum
gen.
nov.
Sinopeucedanum
nov.)
respectively
accommodate
clades
Furthermore,
dating
analysis
showed
diversification
occurred
early
Pleistocene
late
Pliocene,
respectively,
may
driven
complex
geological
climate
shifts
periods.
summary,
our
study
impelled
members
improved
system
Apiaceae
family.